A recent study published in the Proceedings of the National Academy of Sciences suggests that while evolutionary adaptation can play a role in helping black-browed albatrosses survive climate change, it may not be enough to prevent population declines. The research found that significantly reducing greenhouse-gas emissions could cut the species’ risk of extinction in half. Scientists used a detailed model that combined data on the birds’ population trends, physical traits, and climate projections to understand how climate change might impact their survival and how evolution might help them adapt. Black-browed albatrosses are large seabirds that live in the Southern Ocean and spend most of their lives at sea. They are long-lived, with a generation time of several years, which makes it difficult for evolutionary changes to keep up with rapid environmental shifts. The study highlights that while natural selection can favor certain traits that improve survival and reproduction, the speed and intensity of climate change may outpace the ability of these birds to adapt. The researchers found that under future warming scenarios, evolutionary changes generally were not enough to stop the population from declining. This is because the effectiveness of adaptation depends not only on the ability of traits to be passed from parents to offspring, but also on how strongly natural selection favors those traits, how climate change affects survival and reproduction, and how quickly the environment changes. The study reinforces the idea that the success of evolutionary adaptation is closely tied to the conditions under which it occurs. If climate change is limited, evolutionary responses can help populations persist. But under stronger warming, those responses are typically insufficient. The study also emphasizes the concept of "evolutionary rescue," where a population avoids extinction through rapid evolutionary changes. While this is seen as a potential buffer against biodiversity loss, the research suggests that for long-lived species like albatrosses, the pace of climate change may be too fast for evolutionary responses to keep up. Traits like wing length can improve survival in young birds, but the study shows that even these traits may not change quickly enough to prevent population declines. The researchers used a computer model to simulate how different traits and behaviors affect survival and reproduction, showing that under past stable climate conditions, evolutionary changes could support larger populations. However, under future warming, these changes were not enough to prevent decline. The findings underscore the importance of reducing greenhouse-gas emissions to slow climate change and give species more time to adapt. As co-author Stéphanie Jenouvrier explained, evolution can help when it improves the most critical parts of the life cycle for population growth, but limiting the rate and magnitude of climate change gives adaptation a much greater chance to support population survival.